Early style cast aluminum tail light. (red lens) P/N 8378785, MS51329-1. NSN 6220006695623
Early model M-series vehicles used this only on the left side but can be used on both sides if
vehicle has turn signals or brake lights (stop lights) on both rear sides. For M37, M38, M35A1,
trailers, etc. 24 Volt bulbs installed.